Sash lock and antirattler.



J. DB RS.

SASH LOOK AN TIRATTLER.

IIIIIIIIIIIIIIIII BB. 9, 1912.

0 1,030,506. Patented June 25,1912.

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J. DE MARS.

SASH LOOK AND ANTIRATTLER.

APPLICATION FILED rm. 9, 1912.

Patented June 25, 19.12.

2 SHEETS-SHEET 2.

vwenboz q vi/bweoow 235 4. Ji m FRANK MINITREE JOHNSON,

=1 STATES PATENT OFFICE.

JOSEPH DE MARS, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF 'IWO-FIFTHS 'IO OF CHEYENNE, WYOMING, ONE-FIFTH TO ANTHONY J'.

WALKER, OF NIAGARA FALLS, NEW YORK, AND ONE-FIFTH TO ARTHUR J. DE

MARS, OF SAN FRANCISCO, CALIFORNIA.

SASH LOCK AND ANTIRAT'ILER.

To all whom it may concern:

Be it known that I, JosEPH DE MARS, a citizen of the United States, residing at San F rancisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Sash Locks and Antirattlers, of which the following is a specification.

My invention is in the nature of a novel form of sash lock and anti-rattler device for locking the sashes in either open or closed position and for holding them tightly against rattling.

It is an improvement upon that form of sash lock in which the sash are provided on their edges, rugations, and the runways or guide grooves of the window frame are provided with detents capable of being projected into engagement with the teeth or corrugations of the sash, or be withdrawn therefrom, through the agency of a rock shaft arranged at right angles to the plane of the window sash and provided with cams, which cams when the shaft is rocked, bear against the detents to effect their locking engagement with, or release from, the teeth or corrugations of the sash.

The Patent No. 954,719, of April 12, 1910, granted to me as coinventor with A. J. De Mars, is an example of the general type of sash lock and anti-rattler upon which my present invention is an improvement.

The object of my improvements is to simplify construction, to render the device cheaper in manufacture, and to make the devlce more convenient and universal in its application, and to this end it consists in the construction and arrangement of parts hereinafter shown and described and pointed out in the claims.

Figure 1. is an inside view of the two runways or guides of the window frame in which the sash slide with my lock in place, portions of the sashes at the meeting rail being shown in dotted lines. Fig. 2. is a vertical section taken on line 22 of Fig. 1., parallel to the plane of the sash. Fig. 3., is a horizontal section taken on line 33 of Fig. 1. Fig. 4. is a perspective view of the detents with their casing and operating shaft, all of which are embedded in the run- Specification of Letters Patent.

Application filed February 9, 1912.

in the runway with teeth or cor- Patented June 25, 1912. Serial No. 676,524.

way of the window frame. Fig. 5. is a detail of the shaft alone. Figs. 6 and 6, 6 show two forms of toothed or serrated strips to be attached to the edge of the sash. Fig. 7 shows a modification of the key.

Similar letters of reference indicate corresponding parts', in all the views.

In the drawing Fig. 1., A and B represent the two runways or guide grooves in which the sash are arranged to slide up and down. These grooves are formed in the sides of the window frame by an outside bead a, the parting head 6 between the two sash and an inner removable bead strip 0, as is customary in window frames.

The upper sash is shown at S and the lower sash at S the parts of the same being only those portions where they come together at the meeting rail. Opposite this point there are embedded in the wooden window frame my sash locking devices. These consist of a circular cup-shaped casing C struck up in one piece from sheet metal, see Fig. 4. lVithin this are secured two spring detents, D and E, each made exactly alike of a piece of flat steel band material riveted at one end d to the back of the casing and then oflset from the back and at its end curled outwardly at about {right angles to form an engaging flange 6. These two flat spring band detents are riveted in the casing so that their flanged edges project in opposite directions and the planes which these spring detentsoccupy correspond to the planes of the two window sash z'. e. the two detents are spaced apart a distance to lie in the planes of the two sash, so as to engage teeth or corrugations on the edges of the sash. Between these two spring detents and the back of the casing is arranged a horizontal rock shaft F journaled in bearings in the flanges of the casing and extending diametrically across the same. This rock shaft is of rod iron of uniform transverse dimension, but crimped or bent into two eccentric crank-shaped loops f f at points immediately in rear of the spring detents and at an intermediate point between the crimped loops there is a stop projection g which strikes against and stops against the back of the casing, whenever the crimped loops f f have pressed the spring formed by the swaging out of the stop, as.

seen in Figs. 4 and5, and in like manner the two cam loops of the shaft" are bent or struck up out of the shaft itself instead of being an attachment thereto.

In the edges of each sash for a distance about eight inches from the meeting rail there is embedded a metal strip Gr, Figs. 2 and 6, which is stamped into transverse teeth or corrugations into which the flanged edges 0 of the spring detents engage, when projected against the same, to positively lock both sashes in their adjusted positions, either open or shut. This toothed or corrugated strip may be a plain fiat strip with transverse corrugations as seen in Fig. 6, or 1t may, as in Figs. 6*, 6, be a fiat metal strip with its edges flanged outwardly at right angles and having said right angularly flanged edges formed with notches or teeth in the same.

For operating the rock shaft to lock or unlock the sash the end of the shaft projecting toward the interior of the room is squared and on the same is arranged either permanently, or detachably a crank-shaped turning key K arranged at right angles to the shaft and parallel to the window sash. This key when permanently attached will have its square perforation fitted over the square end of the shaft and the inside bead strip 0 will be slotted with a vertical slot at a point between the inner edge of the bead strip 0 and the sash and on the flat side of the bead strip at right angles to the sash to give passage to the key and the face of this slot will be fitted with an escutcheon h having a slot in it to give passage to the shank of the key and define the range of its movement. For private houses this key will.be thus permanently incorporated in the window frame and will merely stick out a short distance beyond the bead strip 0 in a position parallel to the window pane. In some cases, asin hospitals for the insane, or elsewhere, it is desirable to lock the sash so that patients cannot move them and in this case the key is made removable and placed in the care of a keeper. In such case the key is simply made with an open slot at its end fitting the square cross sect-ion of the shaft end, as in Fig. 7, instead of having a square hole as in Fig. 4.

To operate my sash lock, the rock shaft is turned by the key so as to throw the cam loops to or from the spring detents. WVhen thrown toward the detents, said cam loops practically out of sight.

press the detents into engagement with the teeth of the strip on the edges of both sashes and lock them there, since the cam loops pass a little past the dead center just before the stop projection g strikes against the back of the casing, thus preventing any back movement. The sashes may be both locked closed, orboth locked open with a ventilating opening above the upper sash and another opening below the lower sash. To unlock the sash it is only necessary to turn the rock shaft inthe reverse direction by means of the key.

The advantages of my present improvements are first their great simplicity and cheapness, as the cup-shaped casing is stamped up out of sheet metal in circular form and is quicklyapplied by simply boring, sawing, or cutting with a circular die, a circular recess to receive it in the window frame as for instance, with. a circular sawlike that employed in surgical operations in trepanning. Secondly, the detentsv are also stamped up and completely formed each in one piece out of sheet metal, and thirdly, the rock shaft with its loop cams and swaged stop is produced from stock material of uniform diameter, by the simplest and cheapest swaging process. Furthermore as the key is arranged at right angles to the shaft in the middle line of the bead strip and in an escutcheon close by the sash and at right angles to its plane, the parts are put together at a minimum cost, without extending the shaft through the full depth of the window frame and without making any unsightly cut or attachment on the inner face of the window frame and with the devices Thus, after the casing and rock shaft are seated in the window frame with the key K on the end of the shaft, the bead strip 0 is applied directly over the key which passes through its slot and escutcheon.

In defining my invention more clearly, I would state that the rock shaft F is not in any sense a crank shaft to be connected to a pitman, but the bent loops f f are merely cams, acting tangentially against the detents D and E, but not connected to them, and the stamping and bending of this shaft into these cam loops out of rod material of standard cross section, and also the gouging or swaging out of the stop by forcing out a bit of the material of the rock shaft, leaving a hollow or recess beside the stop, is in each case for the purpose of cheapness of manufacture, whose cost is thus brought to a mere trifie. For a similar object of cheapness in manufacture and application, the casing C is stamped up in a single piece of sheet metal in circular cup-form without any oint in its right angular flange and the arched circular form of which unitary flange without joints cooperates with and makes the the same with a stop L back of the casing and two flat spring detents each connected at one end to the casing and ofl set therefrom and extending transversely across the rock shaft in front of the loops and lying tangentially against the loops and having their free ends projecting in opposite directions and turned outwardly away from the rock shaft to engage the edge of the sash.

' 2. A sash lock comprising a flanged casmg having a rock shaft journaled in the flanges and bent into two loops and provided with a stop projection adapted to engage the back of the casing and two flat spring detents each connected at one end to the ca sing and offset therefrom and extending transversely across the rock shaft in front of the loops and having their free ends projecting in opposite directions and turned away from the rock shaft to engage the edge of the sash, the stop projection on the rock shaft being set at an angle in relation to the loops to strike the back of the casing after the loops have passed the dead center line of contact against the detents.

3. A sash lock comprising a circular cupshaped casing with right angular flange stamped up in a single piece without joints, a rock shaft journaled in said flange in diametrical position and having two cams on projection engaging the back of the casing, two flat spring detents, each connected at one end to the back of the casing and offset therefrom and extending transversely across the rock shaft outwardly in front of the cams and havingtheir free ends projecting in opposite directions and turned away from the rock shaft.

4. A sash lock comprising a circular cupshaped easing with right angular flange stamped up in a single piece without joints, a rock shaft journaled in said flange in diametrical position and having two cams on the same with a stop projection engaging the back of the casing, two flat spring detents each connected at one end to the back of the casing and offset therefrom and extending transversely across the rock shaft in front of the cams and having their free ends projecting in opposite directions and turned away from the rock shaft, in combination with the window frame, and its inner bead strip slotted through the middle vertically, the sash lock casing being seated in the runway of the frame with the rock shaft projecting to the said inner bead strip and a turning key at right angles to the shaft extending through the slot in the bead strip to its interior face and an escutcheon on the face of the bead strip at right angles to the sash.

5. A sash lock comprising a detent adapted to be projected against the edge of the sash and a horizontal rock shaft with cam operating on the detent, combined with a window frame, an inner removable bead strip having a middle vertical slot through it opposite the inner end of the rock shaft, and a turning key at right angles to the shaft extending through the slot of the bead strip past its inner face, and an escutcheon for said slot.

6. In a sash lock, a rock-shaft formed with two bent cam-loops and an offsetting stop projection swaged out of the body of the rock-shaft and leaving a depression beside it.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH DE MARS.

iVitnesses:

ALAN F. GARNER, E. C. DUFFY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

